Unlocks popup window.

<div class="definition">
    unlock()
</div>

<h4>Description</h4>

This method will unlock the popup previously locked with <a href="w2popup.lock" class="method">.lock()</a> method. This method will call
<a href="w2utils.unlock" class="method">w2utils.unlock()</a> to perform the action.
<div style="height: 10px"></div>

To unlock popup:
<textarea class="javascript">
w2popup.unlock();
</textarea>